Legal claims defining the scope of protection, as filed with the USPTO.
2. The bandpass parametric amplifier of claim 1, wherein the first and second inductors are non-linear.
3. The bandpass parametric amplifier of claim 1, wherein the plurality of unit cells is part of a ladder circuit structure that creates the bandpass parametric amplifier circuit.
4. The bandpass parametric amplifier of claim 3, wherein a number of unit cells in the ladder circuit structure is odd.
5. The bandpass parametric amplifier of claim 3, wherein every multiple number of the unit cells further includes a resonant structure.
6. The bandpass parametric amplifier of claim 5, wherein the multiple number is 3 to 9.
7. The bandpass parametric amplifier of claim 5, wherein the resonant structures in each of the multiple number of unit cells define a stopband in a gain curve of the bandpass parametric amplifier.
8. The bandpass parametric amplifier of claim 5, wherein the resonant structures in each of the multiple number of unit cells provide phase matching between a pump drive and a propagating in-band microwave signal amplified by the bandpass parametric amplifier.
9. The bandpass parametric amplifier of claim 1, wherein the characteristic impedance of the bandpass filter is above 50 Ohm.
10. The bandpass parametric amplifier of claim 1, wherein the bandpass parametric amplifier is part of a circulator circuit.
11. The bandpass parametric amplifier of claim 1, wherein each of the first and second inductors comprises arrays of Josephson junctions.
12. The bandpass parametric amplifier of claim 11, wherein each Josephson junction comprises aluminum (Al) or niobium (Nb) superconducting electrodes.
13. The bandpass parametric amplifier of claim 1, wherein each of the first and second capacitors is constructed on a low-loss dielectric substrate in a coplanar waveguide geometry.
14. The bandpass parametric amplifier of claim 1, wherein the bandpass parametric amplifier is a directional amplifier.
16. The method of claim 15, wherein the first and second inductors are non-linear.
17. The method of claim 15, further comprising, creating a bandpass parametric amplifier by using the plurality of unit cells as part of a ladder circuit structure.
18. The method of claim 17, wherein a number of unit cells in the ladder circuit structure is odd.
19. The method of claim 17, further comprising, for every multiple number of the unit cells, including a resonant structure.
20. The method of claim 19, further comprising defining a stopband in a gain curve by the resonant structures realized in the multiple number of unit cells.
23. The amplifier of claim 21, wherein the periodic resonant structure is added every 3 to 9 of the nonlinear distributed bandpass filters.
Unknown
August 16, 2022
Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.